On 11/08/10 2:16 PM, nux@nux.ro wrote:
ahmad riza h nst writes:
hello,
i need to setup a mail server with postfix + dovecot + webmin + virtualmin + virtual user with linux system user. the virtual user may reach to thousands user from several hundreds virtual domains.
what i concern is large numbers of linux system user which used in these setup, is it good or bad?
The large number of system users should not be a problem. Might have been an issue with Linux 2.4 (2^16=65536 max users), but Linux 2.6 can handle a LOT (2^32=4294967296)[1].
I'd be more worried of the stress this number of users can inflict on a machine (CPU, memory, I/O etc).
indeed. if half those 1000s of users do the typical lUser thing of checking their mail every minute, thats going to be a LOT of forks.